[brodie]

Why would SF go away without a bay? Do you mean because of tourism?

If anything it seems like SF would grow its boundaries if this happened.

[jacobolus]

Along with LA/Long Beach, Oakland is one of the two major ports on the US west coast. It does tremendous amounts of shipping.

[brodie]

Trains, planes, and automobiles would surely still function?

Is there something inherently better about seafaring ships? Wouldn't the ports just move?